Dental mouth-mirror.



' No. 761,273. PATENTED MAY 31, 1904.

R. WALKER.

- DENTAL MOUTH MIRROR.

APPLICATION FILED MAR. 19, 1904.

no IODEL.

UNITED STATES Patented May 31, 1904.

PATENT OFFICE.

ROBERT WALKER, OF NEW YORK, N. Y., ASSIGNOR TO CHARLES A. SYKES,

V OF NEW YORK, N. Y.

' DENTAL MOUTH-MIRROR. I

SPECIFICATION forming part of Letters Patent No. 761,273, dated May 31,1904.

Application filedMarch 19, 1904. Serial No. 198,880. (No model.)

To all whom it may 0071106771 dental examinations and for other likepurposes must be sterilized after each use, and for this purpose themirror proper must be capable of being removed from its holder, so thatthe sterilizing may be complete and thorough. Various devices have beenproposed for the purpose of enabling the mirror to be removed from itsholder while providing for its secure retention in the holder when inuse, and some of such devices are in use to a considerable extent. Allof these devices, however, embody small parts which are separable, andtherefore liable to be lost or are liable to become broken or arediflicult to handle or in other ways are objectionable in actual use.

It is therefore the object of the present invention to improve theconstruction of the holders in such manner as to overcome the objectionsheretofore referred to and to provide a holder which shall comprise fewparts and shall be easily and quickly manipulated under all conditions.

In accordance with the invention the im proved holder is composed of twomembers which are hinged together, the pintle of the hinge being formed,preferably, upon the handle and having a screw-threaded engagement withone of the hinged members, so that when it is turned up tightly the twomembersof the holder will be clamped in position to retain the mirrorand when it is loosened the holder may be flexed upon the hinge-line topermit the removal of the mirror.

The invention will be more fully described hereinafter with reference tothe accompanying drawings, in which for purposes of illus tration andexplanation it is represented as embodied in a convenient and practicalform.

In the drawings,.Figures 1 and 2 are respectively a front view and arear view of the holder, the handle being broken off to save space. Fig.3 is an edge view, partly in section, in the hinge-line to show detailsof construction. Fig. 4 is a transverse sectional view on the planeindicated by the line 4 4 of Fig. 1. Fig. 5 is a view similar to Fig. 4,but showing the holder flexed. Fig. 6 is a detail view showing a portionof the holder with the hinge-pintle.

The holder may be of any suitable size and shape and may be made of anydesired material. As represented in the drawings, it is composed of twosemicircular plates a and 6, having each a flanged and undercut edge 0,so that when the two plates (0 and b are assembled they shall form adisk with a flanged edge adapted to retain the mirror d. It will beobvious, however, that the plates might have some other desired form andbe otherwise formed to engage the mirror, it being necessary merely thatthe mirror shall be securely held when the holder is in operatingcondition and shall be capable of being withdrawn when the holder isflexed. The two members a and 5 of the holder are hinged together alongthe back, each member being provided with a knuckle a and 6,respectively. The pintle 0 is threaded into the knuckle a, as shown ate, and is provided with a head or shoulder e to bear against the knuckleb, so that when the pintle is turned up tightly the two members of theholderwill be clamped in whatever position they may be placed, suchclamping of the holder when the two members thereof are in the relativepositions shown in Figs. 1, 2, 3, and 4 serving to retain the mirror dfirmly in position. If the pintle be given aslight backward rotation,the two members of the holder are released, so that the holder may beflexed upon the hinge-line, as shown in Fig. 5, and the mirror may thenbe removed to permit both the mirror and the holder to be thoroughlysterilized. For convenience in manipulation, as well as in manufacture,the pintle c is preferably formed as a part of the usual handle f.

It will be obvious that the improved holder is not only inexpensive tomanufacture, but that it has no parts which are liable to be lost orbroken and that it is manipulated with the greatest possible facility,while there are no projecting parts to form additional lodgment forgerms.

1 claim as my invention 1. A holder for dental mirrors, 620., comprisingtwo members formed to engage the mirror and hinged together along theback and apintle for the hinge formed to engage the hinged knuckles toclamp the two members together, substantially as shown and describd.

2. A holder for dental mirrors, &c., comprising two members formed toengage the mirror and hinged together along the back and a pintle forthe hinge threaded into one of the hingedknuckles and havinga shoulderfor contact with another of the hinged knuckles to clampthe two memberstogether, substantially as shown and described.

3. A holder for dental mirrors, &c., com prising two members formed toengage the mirror and hinged together along the back and ahandle formedwith apintle for the hinge and adapted to clamp the two memberstogether, substantially as shown and described.

4. A holder for dental mirrors, comprising two members formed to engagethe'mirror and hinged together in a central line along the back, and ahandle formed with a pintle passing through the hinge-knuckles andengaging the same to clamp the two members together, all of said partsbeing back of the reflectingsurface of the mirror, substantially asshown and described.

This specification signed and witnessed this 18th day of March, A. D.1904;.

ROBERT WALKER. In presence of ANTHONY N. JEsBERA, M. A. BRAYLEY.

